Question about QSC GX3 Amplifier

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I replace all the parts: 2SA1962 and 2SC5242 and then my qsc gx3 isn't working.

I have + 52V at C49 and -52V at C50, I would like to test this set part by part ,how to do it.

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  • Expert
  • 108 Answers

Check the triac that is at the output

Posted on Dec 30, 2013

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Kuwagata
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SOURCE: My QSC GX3 has a red light that turned on (on the

You should check the speaker set, maybe it's short circuit.
Try remove the speaker set from the unit, than switch on the amplifier again, if the red light still on, surely the final drive is damages( Transistors or IC's).
Replace it with new ones.

Posted on Oct 18, 2009

  • 483 Answers

SOURCE: what kind a outputs transistor use a QSC Gx3 power Amp

Hi,
this power amp uses 2SA1962 and 2SC5242 output transistors. You can download the schematic diagram from this website.
Thanks.
gylacz

Posted on May 11, 2012

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What kind a outputs transistor use a QSC Gx3 power Amp


Hi,
this power amp uses 2SA1962 and 2SC5242 output transistors. You can download the schematic diagram from this website.
Thanks.
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http://www.retrevo.com/support/QSC-GX3-Amps-manual/id/23107ag606/t/2/

See page 7.

"CLIP: red, to the left of each Gain control.

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My QSC GX3 has a red light that turned on (on the front panel). The channel is not working. Is this a fuse or something else?


You should check the speaker set, maybe it's short circuit.
Try remove the speaker set from the unit, than switch on the amplifier again, if the red light still on, surely the final drive is damages( Transistors or IC's).
Replace it with new ones.

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